Improvement in reversible knob latches



diluted geen;

ALBERT M. HILL, NEW HAVE, ,GONNIIGTIGU'I Letters Patent No. 108,261,dated October 11, 1870.

IMPROVEMENT IN REVERSIBLE KNOB LATCHES.-

The Schedule referred'to in these Letters Patent and making prt of thesame.

To ZZ whom it may concern Be it known that I, ALBERT M. HILL, of NewHaven, in the county of New Haven and State of Connecticut, haveinvented a new Improvement in Reversible Latehes; and I do herebydeclare the following, when taken in connection with the accompan yingdrawing and the letters of' reference marked thereon, to be a full,clear, and exact description of the same, and which said drawingconstitutes part of this specification, and represents in- Figure 1, aview of the latch, with the plate removed;

Figure 2, the yoke and latch-bolt, detached;

Figure 3, a section of the yoke, on line a: x;

Figure 4, an inside view of the plate, showing the cam; and in Figure 5,a section, showing the manner of attaching the plate to the case.

This invention relates to an improvement in reversible knob-latches, andconsists in constructing the lugs of the yoke with a double incline, sothat the holt may bo easily'inserted, either side up, withoutdierangemeut of thel follower.

A is the case, of common construction.

B, the follower, constructed and arranged to receive the knob-spindle inthe usual manner.

C, the laten-bolt, formed upon or attached to a spindle; I), and thesaid spindle formed upon or rigidly attached to the yoke E, the yokebeing constructed with the two arms I" and G, each oftheI arms providedrespectiizely with lugs fg, both turning inward onto the follower, asseen in Iig. l.

On the spindle I arrange a loop, a, the ends of which t-urn against theyoke, and so as to leave a space, d, between the loop and yoke, as seenin fig. 2.

In the case a slotted stud, b, is formed, corresponding to the space dbetween the loop and yoke, so that, when the bolt and yoke are setwithin the case, the stud I) will pass into the space between the loopand yoke, as seen in iig. 1.

Between the loop and bolt-head a spring is arranged, as seen in gs. 1and 2, so that, when the bolt is drawn or pressed in', as denoted bybroken lines, tl".

l, the loop remains against the stud to support the spring, and whenreleased, the spring throws out the bolt in the usual manner.

For the purpose ot' reversing the latch I form the lugs j" y, as seen iniig. 3, with a double incline, (ontward,) so that, when 'the holt is setinto position, the

incline will allow the yoke to pass freely down onto` the follower,without any liability of disa-rranging the follower. 'lo reverse thelatch, remove the plate, take out the yoke and bolt, as seen in lig. 2,turn it over, and replace it.

II is the plate, or removable side of the case. Upon its inside I form acam, n, turning upon a center, which extends through to the outside, asseen in fig. 5. 'Ihe extremes ot' the'cam are of dovctal form, the twosides flat, as seen in rigs. .4. and

in is a stud formed upon the case, and fitted to receive the said cani,the seat for the cani being,r dovetailed, and coi-respondng'with theextremes ot the cam; therefore, with the cam in position, as -seen iniig. 4, set the plate in position. 'Ihe cainpasses into the recess inthe stud m. Ihen, with a screw-driver or other suitable instrument, turnthe cam imposition as denoted hy broken lines, Iig. 4, and as also seenin fig. 5. The ends of the cam lock into the recess and Secure the platein position. By this arrangement the plate is removed by simply aquarter turn ot' the screw-driver, and there is no liability to lose thescrew, as in a'common method oi'securing the plate, and the. expenseofthe cam is no more than a screw.

I do not wish to be miden-stood as broadly claiming" the latch-bolt andyoke, constructed so as to be re versed by removing them yfrom the case,as such, I am aware, are very old; hut

I do claimy '.Lhe double inclined lngsfg, iomed upon the arms ofthe yokeE, combined with the follower'l, so as to be set onto the said follower,substantially as set forth.

A Llllt' M. 'llllllt Witnesss:

l1. H. Rosselli., l. B. LINE.

